2561476

Appears in sequences

• Number of 2 X n arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 2 X n array.at n=33A219715
• Coefficient of x^n in the expansion of ( (1+x) / (1-x^3)^3 )^n.at n=12A370216